iox2-51 integrate posix condition variable for mac os

[elfenpiff]

Notes for Reviewer

This is the first of some PR for mac os support. In this PR the mac os condition variable is finalized by using a low level semaphore based on atomics and atomic wait operations.

Pre-Review Checklist for the PR Author

1. Add sensible notes for the reviewer
2. PR title is short, expressive and meaningful
3. Relevant issues are linked
4. Every source code file has a copyright header with SPDX-License-Identifier: Apache-2.0 OR MIT
5. Branch follows the naming format (iox2-123-introduce-posix-ipc-example)
6. Commits messages are according to this guideline
   • Commit messages have the issue ID ([#123] Add posix ipc example)
   • Commit author matches Eclipse Contributor Agreement (and ECA is signed)
7. Tests follow the best practice for testing
8. Changelog updated in the unreleased section including API breaking changes
9. Assign PR to reviewer
10. All checks have passed (except task-list-completed)

Checklist for the PR Reviewer

• Commits are properly organized and messages are according to the guideline
• Unit tests have been written for new behavior
• Public API is documented
• PR title describes the changes

Post-review Checklist for the PR Author

1. All open points are addressed and tracked via issues

References

Use either 'Closes #123' or 'Relates to #123' to reference the corresponding issue.

Relates to #51

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (f05ce41) 77.86% compared to head (f2b5c68) 77.89%.
Report is 1 commits behind head on main.

❗ Current head f2b5c68 differs from pull request most recent head 05d43b0. Consider uploading reports for the commit 05d43b0 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #52      +/-   ##
==========================================
+ Coverage   77.86%   77.89%   +0.03%     
==========================================
  Files         171      172       +1     
  Lines       18638    18664      +26     
==========================================
+ Hits        14513    14539      +26     
  Misses       4125     4125              

Files	Coverage Δ
...yx2-pal/concurrency-sync/src/condition_variable.rs	100.00% <100.00%> (ø)
iceoryx2-pal/concurrency-sync/src/lib.rs	100.00% <100.00%> (ø)
iceoryx2-pal/concurrency-sync/src/mutex.rs	94.64% <100.00%> (+0.30%)	⬆️
iceoryx2-pal/concurrency-sync/src/semaphore.rs	93.10% <100.00%> (+1.72%)	⬆️
iceoryx2-pal/concurrency-sync/src/rwlock.rs	97.84% <95.00%> (-0.34%)	⬇️

[elBoberido]

Looks good overall